Generating go projects packages graph in DOT language (Graphviz)

packages-graph.sh

#!/bin/bash

set -e

root_package="$(awk '/module/ {print $2}' go.mod)"

go list -f '{{.ImportPath}} {{range .Imports}}{{.}} {{end}}' ./... \
  | awk -v root_package="${root_package}/" '
    BEGIN {
       FS=" ";
       printf "digraph \"%s\" {\n", root_package
    }
    {
        gsub(root_package, "", $1)
        for(i=2; i<=NF; i++) {
            if (index($i, root_package) != 0) {
                gsub(root_package, "", $i)
                printf "\t\"%s\"->\"%s\"\n",$1, $i;
            }
        }
    }
    END{
        print "}"
    }
'